KR20030066087A - A water-soluble mold release agent of tire - Google Patents

Abstract

PURPOSE: A water-soluble release agent for a tire is provided to improve work efficiency, and to prevent the injury of a worker by using harmless paraffin oil as the release agent for the tire. CONSTITUTION: A water-soluble release agent for a tire is composed of paraffin oil of 1-40 weight percent, oleic acid of 0.01-10 weight percent, stearic acid of 0.01-10 weight percent, an emulsifying agent of 0.01-10 weight percent, antifoaming agent of 0.01-10 weight percent, a thickener of 0.01-10 weight percent, and water of 60-95 weight percent.

Description

Tire Water Soluble Mold Release Agent {A WATER-SOLUBLE MOLD RELEASE AGENT OF TIRE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-soluble mold release agent for tires, and relates to a tire water-soluble mold release agent without the possibility of improvement of workability and environmental pollution by removing harmful substances to the human body as a cosmetic raw material.

In the existing tire manufacturing process, a mold release agent having harmful effects on humans and the environment due to harmful substances to the human body is used, and in particular, paraffin oil which is harmless to the human body is used. In the existing mold release agent, only workability is considered, and it is a big disadvantage because it does not consider the health and environmental aspects of the worker, and it is characterized by the water-soluble mold release agent which improves workability and satisfies the above conditions.

The technical problem to be achieved of the present invention aims to produce a better tire product by replacing the environmentally friendly tire water-soluble mold release agent with a worker's health and environmentally friendly materials.

The paraffin oil of the aqueous tire-based mold release agent composition of the present invention is used as a raw material for cosmetics and is environmentally friendly and harmless to humans. In particular, it was tested to be good for tire products.

What is important in the manufacturing method for the tire-based molding release agent is the temperature, the ratio of paraffin oil and emulsifier. This method is emulsified paraffin oil. If the temperature is 50 ~ 99 ℃, and the temperature is low, it is not emulsified. If the temperature is high, oxidation occurs and color change and odor are generated, thus losing its value as a product. In addition, since the emulsification properties vary depending on the ratio of paraffin oil and emulsifier, it is characterized in that the stirring speed as shown in Table 1 below acts as an important factor. If these conditions are not met, delamination will quickly occur, resulting in loss of shelf life and loss of value as a product.

More detailed manufacturing method is to heat the paraffin oil, oleic acid, stearic acid to 70 ~ 90 ℃ and then add sufficient emulsifier (5 ~ 10 minutes), water (70 ~ 99 ℃) at the maximum stirring speed It is a tire-forming aqueous-based releasing agent, characterized in that the addition of the stirring, 30 minutes after the reaction is completed, the antifoaming agent is added, and then very slowly stirring, adding a thickener.

EXAMPLE

According to the composition of Table 1, it is characterized in that to produce the optimum tire-based molding release agent.

In the Examples, paraffin oil and thickener are changed to show the conditions for making an optimum tire-based molding release agent. Examples 1 to 2 show a low amount of paraffin oil and a thickener, so that storage is poor as shown in Table 2. In Examples 4 to 5, since the amount of paraffin oil and thickener increases, contamination of the mold surface appears as shown in Table 2, resulting in poor product quality.

TABLE 1

(Unit: weight%)

ingredient Example 1 Example 2 Example 3 Example 4 Example 5 Paraffin oil 2 5 10 15 25 Oleic acid One One One One One Stearic acid 2 2 2 2 2 Surfactants CA-2 0.6 0.6 0.6 0.6 0.6 CA-5 0.6 0.6 0.6 0.6 0.6 CA-13 0.6 0.6 0.6 0.6 0.6 CA-20 0.6 0.6 0.6 0.6 0.6 water Antifoam One One One One One TEA 0.5 0.5 0.5 0.5 0.5 Incremental Agent (SN-920) 0.5 One 1.5 2 2.5 Sum 100 100 100 100 100

As a result of measuring the conditions made in the conditions of Table 1 above, as shown in Table 2, Example 3 is characterized by the optimum release agent.

TABLE 2

division Example 1 Example 2 Example 3 Example 4 Example 5 PH (25 ℃) 8.24 8.36 8.39 8.45 8.56 Layer Separation Rate More than 10 days 20 days or more 30 days or more More than 37 days 49 days or more Spray uniformity Bad Good The best Good Good Rubber-rubber adhesion Good Good The best Good Good Contamination degree of mold surface Good Good The best Bad Bad

As described above, the paraffin oil used in the tire-based molding release agent of the present invention is used as a raw material for cosmetics, so it is expected to have high preference in terms of health and environment of the worker because it is harmless to the human body and water-soluble.

Claims (1)

Paraffin oil (65-100%) 1-40 wt%, oleic acid 0.01-10 wt%, stearic acid 0.01-10 wt%, emulsifier 0.01-10 wt%, defoamer 0.01-10 wt%, TEA 0.01-10 wt%, thickener A tire water-soluble molding release agent comprising a composition of 0.01 to 10% by weight, water 60 to 95% by weight.